Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

11 hosts · 284 ms

HostCertsFirst seenLast seenDNS
swissquote.com 5 2025-07-09 2026-04-10 ok
*.swissquote.com 7 2025-07-09 2026-09-17 —
inside.swissquote.com 2 2025-07-22 2026-06-22 ok
api.inside.swissquote.com 4 2025-07-22 2026-07-30 ok
m.emailing.swissquote.com 1 2026-02-04 2026-02-04 nxdomain
res.emailing.swissquote.com 1 2026-02-03 2026-02-03 ok
t.emailing.swissquote.com 1 2026-02-04 2026-02-04 nxdomain
hackathon.swissquote.com 1 2026-08-25 2026-08-25 ok
mixcommander.swissquote.com 7 2026-05-21 2026-09-18 ok
tms.swissquote.com 5 2026-04-22 2026-08-20 ok
library.swissquote.com 2 2025-08-12 2026-07-13 ok

Programmatic access, with DNS A records: API GET /v1/hosts/swissquote.com (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/swissquote.com.